song2(3);

sub song2 {
  my $octave = shift;

  my $num = 0;  

  while ($num < 10) {
	  sleep(.5);
	  $midi_obj->play_note('D', ".25", 127, 1, 1, $octave) || print $midi_obj->error() . "\n" and $midi_obj->reset_error();
	  $midi_obj->play_note('F', ".25", 127, 1, 1, $octave) || print $midi_obj->error() . "\n" and $midi_obj->reset_error();
	  $midi_obj->play_note('D', ".25", 127, 1, 1, $octave) || print $midi_obj->error() . "\n" and $midi_obj->reset_error();
	  $midi_obj->play_note('G', ".25", 127, 1, 1, $octave) || print $midi_obj->error() . "\n" and $midi_obj->reset_error();
	  $midi_obj->play_note('D', ".25", 127, 1, 1, $octave) || print $midi_obj->error() . "\n" and $midi_obj->reset_error();
	  $midi_obj->play_note('F', ".25", 127, 1, 1, $octave) || print $midi_obj->error() . "\n" and $midi_obj->reset_error();
	  $midi_obj->play_note('D', ".25", 127, 1, 1, $octave) || print $midi_obj->error() . "\n" and $midi_obj->reset_error();
	  sleep(2);
	$num++;
  }
}